Exception: PDF Document is Empty

Hello

I have made two templates.
When I use the shortcode for download of the first, everything goes fine. But when I use the second one, this error appears:
Exception: PDF Document is Empty
Please. Help me.

Hi,

Check please if you did not create any "Action" by mistake on page which "Hide" it. If yes - remove as it's showed on screenshot.

We remain at your service.

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We would really appreciate your feedback at WordPress.org!

Thanks a lot. Resolved.